太原地区太阳能耦合空气源热泵一体化热水系统性能分析

为解决太阳能热水系统占地大、供热水稳定性差、空气源热泵冬季易结霜、能效比较低的问题,提出太阳能/空气能蒸发集热器并构建其热泵热水系统.建立该系统的TRNSYS模型,分别研究太原地区的夏季和冬季工况的系统制热性能参数变化情况.研究结果表明:在夏季高温太阳辐射照度大典型工况下,该系统平均制热性能系数(COP)值为6.026,较空气源热泵热水系统提高44.16%;在冬季低温高湿易结霜典型工况下,该系统平均COP值为3.25,较空气源热泵热水系统提高6.56%.

Performance Analysis of Solar Energy Coupling With Air Source Heat Pump Integration Hot Water System in Taiyuan Area

Solar hot water system covers large areas and is unstable, and air source heat pump has a low energy efficiency when frosted easily in winter. To solve these problems, a solar energy/air source evaporation collector and hot water system was proposed. TRNSYS model was established to study the heating coefficient of performance under the changes of environmental and working conditions in summer and winter respectively in Taiyuan Area. Simulation results show that, system average coefficient of performance(COP)value is 6.026, 44.16% higher than that of the air source heat pump hot water system under the condition of high temperature and abundant solar energy in summer; and the system average COP value is 3.25, 6.56% higher than that of the air source heat pump hot water system under the condition of low temperature and high humidity in winter.